Solar developer
ERIN MCMAHAN
46 recorded solar installations developed by ERIN MCMAHAN — mostly in District of Columbia.
Dataset updated . Sources: LBNL Tracking the Sun + permits + state programs + USGS/EIA utility-scale.
Installations developed
46
Total capacity
4.3 MW
DC nameplate
States
1
Median size
35.4 kW
Median $/W
—
pre-incentive
Third-party owned
0%
lease / PPA
Growth
Installations by year
2018
1
2019
7
2020
6
2021
8
2022
2
2023
4
2024
3
2025
12
2026
3
Latest records
Most recent recorded installs
| Date | Location | Size | $/W | Segment |
|---|---|---|---|---|
| Feb 11, 2026 | Washington, DC | 62.5 kW | — | COM |
| Feb 6, 2026 | Washington, DC | 83.2 kW | — | COM |
| Jan 2, 2026 | Washington, DC | 43.7 kW | — | COM |
| Dec 22, 2025 | Washington, DC | 64.9 kW | — | COM |
| Dec 11, 2025 | Washington, DC | 153.2 kW | — | COM |
| Dec 8, 2025 | Washington, DC | 49 kW | — | COM |
| Nov 24, 2025 | Washington, DC | 7.9 kW | — | COM |
| Oct 23, 2025 | Washington, DC | 44.6 kW | — | COM |
| Oct 15, 2025 | Washington, DC | 49 kW | — | COM |
| Sep 17, 2025 | Washington, DC | 24.3 kW | — | COM |
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Service geography
Frequently asked questions
How many solar installations has ERIN MCMAHAN developed?
PanelCensus records 46 installations developed by ERIN MCMAHAN, from Aug 22, 2018 to Feb 11, 2026, totalling 4.3 MW of capacity across 1 state. Coverage varies by state, so actual totals may be higher.
Where does ERIN MCMAHAN operate?
Most recorded activity is in District of Columbia (46).